Details

Autor(en) / Beteiligte

• Bloomquist, Brian T.
• Beauchamp, Michelle R.
• Zhelnin, Leonid
• Brown, Su-Ellen
• Gore-Willse, Ann R.
• Gregor, Paul
• Cornfield, Linda J.

Titel

Cloning and Expression of the Human Galanin Receptor GalR2

Ist Teil von

• Biochemical and biophysical research communications, 1998-02, Vol.243 (2), p.474-479

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

1998

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• Galanin is a peptide hormone which modulates a wide variety of physiological processes, including secretion, muscle contraction, cognitive function, the reproductive axis, and feeding. Two galanin receptor subtypes, GalR1 and GalR2, have been cloned; however, for GalR2 only the rat sequence has been reported in the literature. Our cloning of human GalR2 reveals its amino acid sequence to be 85% identical to rat GalR2 and 39% identical to human GalR1. Binding of [125I]galanin to the human GalR2 receptor transiently expressed in COS-7 cells was saturable (Kd= 0.24 nM ± 0.06 nM) with a receptor density of 383 ± 66 fmol/mg protein. Human galanin(1-30) bound with high affinity to the human GalR2 receptor, with a Kivalue of 0.86 ± 0.12 nM. With the identification of a second galanin receptor subtype, the specific functions of human galanin receptor subtypes can now begin to be addressed.